Hypotheses for the functional role of self-rubbing or object rubbing in odontocetes include hygiene (e.g. ectoparasite removal), sensual pleasure, play and socialisation. Self-rubbing has only been described in a few odontocetes, . . .

Mating tactics have been studied more in male than female dolphins. In some populations of Indo-Pacific bottlenose dolphins (Tursiops aduncus), males are aggressive and females may have limited control of . . .

While all animal studied to date sleep, cetaceans are among the few that engage in the unusual practice of unihemispherical sleep, where only half of the brain displays typical signs of sleeping. Certain behaviours, such as circular swimming, have . . .